(57) A unit (300) for the control or management of products, in particular packs, is preferably
usable in a plant for making respective articles (11), in particular defined by rolls
(111) of paper material, the plant (10) preferably comprising at least one operating
line including at least one upstream section (1) for making the articles, in particular
in the form of a log saw for cutting rolls off respective elongate logs, at least
one respective packaging section (2), in particular for primary packaging, preferably
in the form of a packing section where the articles or rolls are packed and preferably
at least one or more further packaging sections, in particular in the form of at least
one bagging section (3) where the packs are placed in bags and/or one palletizing
section (4) where the packs or bags are placed on pallets; the plant comprising a
conveying section (5), or means, by which the products are transported between one
section of the plant and another, in particular between the means (1) which make the
articles and the respective packaging section (2) and/or between one packaging section
and another downstream; the plant being provided with process control means for controlling
the functioning of the plant sections. The unit comprises means for detecting and/or
lighting a respective face of the product or pack and which are adapted to produce
different images of the respective product face, in particular which exhibit different
states of reflection of the light that is incident upon the respective product face.
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